Elastic wheel.



E. AIMOND.

ELASTIC WHEEL.

APPLICATION man Auaafmz.

1,155,865. Patented oct. 5, 1915.

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E. AIMOND.

ELASTIC WHEEL.

APPLICATION FILED AuG.8. ,1912.

1,155,865. Patented 05.51915.'

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UNITED sTATEs PATENT oEEroE.

EMILE AIMoND, or PARIS", FRANCE.

ELAsTicl WHEEL.

To @ZZ whom it may concern:

Be it known that I, EMILE AIMoND, a citizen of thejRepublic of France,residing at Paris, 2l Rue Ohaptal, in the Republic 5 of France,engineer, have invented certain new anduseful Improvements in an ElasticVheel, of which the following is a specification. i l

This linvention relates to elasticV wheels of the type in which the hub,isl suspended within a rigid rim by means of an internal ring which canyield relatively, to the hub and to the rim and is connected to theseparts by two series of radially arranged springs.`

The invention consists in an improved elastic Wheel of this type inwhich the play of the yielding ring relatively to the rim is small, sothat the springs between these two parts have the sole function ofpressing the spokes against bearing plates on the rim, the elasticity ofthe suspension being insured by other springs inserted between theyielding ring and the hub. The play allowed between the yielding ringand the hub corresponds to the maximum vertical displacement of the'axle.

The springs between the ringand the rim act on telescopicy spokes oneend, of which bea-r against the uniform surface of the ring and theother against bearing plates on the rim, which spokes are guidedradially in y bearings attached to the hubpincapable of turningrelatively thereto. Owing to this guiding and the pressure of the spokesagainst the bearing surfaces of the rim the torque is transmitted fromthe hub'to'the spokes and from the spokes to the rim, or inversely fromthe rim to the hub.

Owing to this division of the functions of the two setsof springs eachof these may be adapted to the work it has to perform and the pressureof the telescopic spokes against the rim can be maintained continuallyalong the whole circumference, insuring a powerful and silent drive,without wear. Y j

One construction of the improved elastic wheel according to the presentinvention is illustrated in the accompanying drawings,

in which- Figure 1 illustrates a portion of the wheel, partly inelevation and partly in section..

Fig. 2 is a transverse section at the line A-A of Fig. 1. Figs. 3 and lare diagrams illustrating the working of the wheel.

specification oftettrs Patent.

two-cheeks a4 of annular form, the internal and external edges ofwhich'bear the one 'against the other respectively, and of which` themiddle parts are cut away, leaving a Vcerv tain space betweentheycheeksg. these cheeksv are securely bolted kto the flanges a3.

denotes the rim of the wheel consisting for example of a ring b1 ofUmshaped section, two rings b2v attached to the ring b1 by means ofangle :pieces ba'and bolts b4,- and f a rubber tire-bl lVithin thisrigid rim Vare lixed by means'of bolts b4, bearing plates be Patentedoet. 5, i915.

Application filed August 8, 1912. Serial No. 714,026. l i

having a1 concave sidey turned. toward. the i center ofthe wheel, theseplates serving lfor the transmission of the torque. In the space betweenthe cheeks at is located the. yielding ring c the periphery of which isuniform.

of a series of telescopic spokesrcZ consisting, of two sleeves d1, Z2sliding one in the other and inclosing a spring e tending to hold Thisring is attachedto the rim by means Y them apart-and press their endsprovided .with rollers Zt `and Z5 against the ring c 'and the bearingplatesib6 of the rim. The

sleeves d1 are guided radially in bearings a5 lfixed rigidly in theouter flanges of the cheeks at. Thesev bea-rings are of as'largeJdiameter as .permittedby the play allowed between the axle'and Vthe hub,Vand thev rim, so that lthe spokes are comparatively little outof truebeyond they bearings a5 and. are only slightly stressed bythetransmission of circumferential forces; The elasticity of the Y lsuspension is derived fromsprings f encirf cling the spokesand'compressed between the bearings (t5, attached yto the hub, and theAy bottom flanges Z6 of the sleeves a?, the rollers Z5 of whichcontinuously bear against the Vyielding ring 5. l

Under the effects of the load on thevhub the springs f in the upper halfof the'wheel are compressed (Fig. 4) and push down the rings c. In thelower half of the wheelv the spokes are compressed by the ring c, butthey cannot yield far in this direction since the clearance between theends of the by the springs f. The springs e keep thev rollers d* and d5always in contact with the ring c and the bearing plates 56 of the rimwith suiiicient pressure to insure the driving of the rim by the spokes,or of the spokes by the rim, according to circumstances. The play of thesleeves Z1 and Z2 relatively to each other is such that the rollers Z4and Z5 are never compelled to leave the ring c or the plates 6G, so thatthere is freedom from shock noise and wear.

rlhe above described constructional arrangements give a wheel of simpleand strong construction. rEhe details may be modied without departurefrom the invention.

The wheel illustrated is provided with sheet metal cheeks g g1 iiXed tothe rim andy to the hub respectively, packing pieces g2 being arovidedwhere the cheeks work on each other. The cheeks g may be attached tothesides of the ring b1 by means of, for example, narrow rings g3 held inplace and pressed against the cheeks by suitable claws gt which passthrough the bolts b4. ln Fig. 2 a bearing plate be and a claw g4 areshown secured by the same bolt 5*, but the plate and claw may be securedby separate bolts.

I claiml. An elastic wheel comprising the combination of a hub, a rigidtelly having internally angular parts, a free ring, springs radiallyarranged between the free ring and the hub, telescopic spokes interposedbetween the free ring and the angular surfaces oi" the elly, and springslocated in the telescopic spokes and adapted for lengthening the latter.

Q. rin elastic wheel comprising the coinbination of a hub having guidingparts, a rigid felly having internally angularparts, a /t'ree ring,4springs radially arranged between the free ring and the hub, telescopicspokes interposed between the free ring and the an- Copies of thispatent may be obtained for gular surfaces of the felly, and`springsslocated in the said telescopic spokes and adapted forlengthening the latter, such spokes being radially guided in saidguiding parts and those guiding parts being placed as near as possibleto the felly to allow the necessary play of the hub with respect to thetelly.

3. ln an elastic wheel the combination of a hollow hub, a free ringwithin the hollow hub, a rigid telly having internally angular parts,telescopic spokes which are radially guided intheperiphery of the hub,their outer ends bearing against the angular surfaces of trie telly andtheir inner ends bearing` against the periphery of the free ring,springs located in the said telescopio spokes and adapted forlengthening the latter, and springs interposed between the said freering and the peripheral part of the hollow hub.

et. A yielding wheel comprising the combination of a rigid telly havingangular inner parts, a hub, a free ring independent of the felly and ofthe hub, yielding spokes having springs compressed between the angularparts of the elly and the said ring and so adapted as to allow only alittle radial play on the part oi the ring with respect to the lelly,and springs intercalated between the said ring and the hub, the radialplay of the hub with respect to the ring, and consequently, the play ofthe springs intercalated between them, being greater than that of thering with respect to the iielly.

ln testimony, that l claim the foregoing as my invention l have signedmy name in presence of two subscribing witnesses.

EMILE AMOND.

llVitnesses:

lL-l. C. Comi, EUGENE VVATTIER.

five cents each, by addressing the Commissioner of Patents,

Washingtom. C.

Cil

